If you are looking for a secure, very easy to configure and use, remote desktop app (and I am happy to report it works well with Linux), check out TeamViewer. If you don't mind the app reminding you to upgrade it--and the lack of a few features--it is completely free. You can grab everything you need here (DLs available for Mac, PC, and Linux), and the app store link above. The config for Ubuntu geeks is pretty simple (download the debian package, run the desktop app, and perform similar actions on iPhone to connect).
There is another contender in the note taking category, GhostWriter Notes($3.99) by MajorSpot. At first glance this app appears to be very basic, and in some respects it is.
I just received a new Press Release about my favorite PDF Reader. Now only is it the best PDF reader, but it makes creating, viewing and protecting forms a cinch! Here's an excerpt from the PR:
The recent success of Project Watson, an IBM computer, in demolishing the two all-time most successful champions on the Jeopardy quiz show has focused attention on the coming of natural language understanding to computers — and to our iPhones. The trick has been to teach a computer not just to search databases of information but to understand natural human language. Imagine how convenient that would be: you'd never have to type a query or tap your phone's screen again.
We reported previously on the OneNote app, which I briefly reviewed (the WP7 version) in my HD7 review. My impression is it's a sort of dumbed down Evernote (without the fancy website scraping). You can now sync and track your bullet lists, to-dos and even embed pix in notes on iPhone (requires a Live ID--app will help you create one). This is a reminder that you can still get the mobile iOS app for free in the App store (limited time).
Pocket Informant has been written about a number of times here and is probably my most used app. It's normally $14.99 for the iPad version and is now on sale during Macworld Expo for $6.99. It is also available at a discounted price of $4.99 for iPhone and iPod Touch too.